{
  "manageEntity": {
    "action": "Subscribe",
    "entityId": "108203",
    "entityType": "User",
    "nonce": "0x545e6be95c503fcd049fdb36bed5eb27066a4b2be284694d2a9efcf89111cf5b",
    "signature": "0x3b387485c79852e57784eb5951b3e9c922ce0cb232fde4c2ce3b2817ca48a06e1e71756e6b5b16391000267104d707a780ab918ff020ae100c071fc1e3d726e31c",
    "signer": "0x7fdeEB144300AC6b1Be0E83d8f006b2D3140F73D",
    "userId": "325377357"
  }
}